Search & Filtering
A typical E.coli bacteria is about 5 micrometres in length How long is this length in millimetres?
A light ray of wavelength λ is incident from medium1 a to medium 2; the ratio between n1 and n2 is 4/3. If the incidence angle is equal the critical angle θc, the refracted angle is
A 3000-kg car pulled a 1000-kg crate along a straight highway. A driving force of 9000 N accelerates the car and the crate at 1.5 m/s2 . Assuming that one-third of the total friction is acting on the crate and two-thirds on the car, determine the total friction and the magnitude of the tension at the rope
Point A is at a potential of +250 V, and point B is at a potential of -150 V. An α-particle is a helium nucleus that contains two protons
and two neutrons; the neutrons are electrically neutral. An α-particle starts from rest at A and accelerates
toward B. When the α-particle arrives at B, what kinetic energy (in electron volts) does it have?
2 kg is equivalent to how many grams?
A single phase 100 VA, 120/24 V transformer has the following results from the
open-circuit and short-circuit tests.
Open circuit Short Circuit
Voltage 120V 6V
Current 0.1A 4.9A
Power 4.5W 16W
(a) Determine the circuit parameters (Rc, Xm, Req, Xeq) referred to the High
Voltage side. [8 Marks]
(b) Determine the efficiency of the transformer at full load with 0.8 power factor
lagging.
The scalar components of the displacement vector are x = -3 m and y = 4 m. Determine the angle that this vector coincides with the positive direction of the x-axis.
A snowboarder is attempting to clear a gap after a jump, and it is known that he must be travelling at least 34 mph to clear the gap. If the distance from the start of hill to the jump is 42 yards long, what is the acceleration of the snowboarder if he starts from rest? Please express your answer in ft/s2. (Hint: 1760 yards = 1 mile)
analyze the views on theory and practice of reflection
Giving a mass of 2kg
Attached to an elastic and whired round 2times, radius 3cm and for 3sec
#340153 on Dec 2023